<template>
  <div style="width:100%">
    <el-table
      :data="tableData"
      border
      row-key="id"
      align="left"
    >
      <el-table-column
        v-for="(item, index) in col"
        :key="`col_${index}`"
        :prop="dropCol[index].prop"
        :label="item.label"
      ></el-table-column>
    </el-table>
    <pre style="text-align: left">
      {{dropCol}}
    </pre>
    <hr>
    <pre style="text-align: left">
      {{tableData}}
    </pre>
  </div>
</template>
<script>
import Sortable from "sortablejs";
export default {
  data() {
    return {
      col: [
        {
          label: "日期",
          prop: "date"
        },
        {
          label: "姓名",
          prop: "name"
        },
        {
          label: "地址",
          prop: "address"
        }
      ],
      dropCol: [
        {
          label: "日期",
          prop: "date"
        },
        {
          label: "姓名",
          prop: "name"
        },
        {
          label: "地址",
          prop: "address"
        }
      ],
      tableData: [
        {
          id: "1",
          date: "2016-05-02",
          name: "王小虎1",
          address: "上海市普陀区金沙江路 100 弄"
        },
        {
          id: "2",
          date: "2016-05-04",
          name: "王小虎2",
          address: "上海市普陀区金沙江路 200 弄"
        },
        {
          id: "3",
          date: "2016-05-01",
          name: "王小虎3",
          address: "上海市普陀区金沙江路 300 弄"
        },
        {
          id: "4",
          date: "2016-05-03",
          name: "王小虎4",
          address: "上海市普陀区金沙江路 400 弄"
        }
      ]
    };
  },
  mounted() {
    this.rowDrop();
    this.columnDrop();
  },
  methods: {
    //行拖拽
    rowDrop() {
      const tbody = document.querySelector(".el-table__body-wrapper tbody");
      const _this = this;
      Sortable.create(tbody, {
        onEnd({ newIndex, oldIndex }) {
          const currRow = _this.tableData.splice(oldIndex, 1)[0];
          _this.tableData.splice(newIndex, 0, currRow);
        }
      });
    },
    //列拖拽
    columnDrop() {
      const wrapperTr = document.querySelector(".el-table__header-wrapper tr");
      this.sortable = Sortable.create(wrapperTr, {
        animation: 180,
        delay: 0,
        onEnd: evt => {
          const oldItem = this.dropCol[evt.oldIndex];
          this.dropCol.splice(evt.oldIndex, 1);
          this.dropCol.splice(evt.newIndex, 0, oldItem);
        }
      });
    }
  }
};
</script>

<style scoped>
.flip-list-move {
  transition: transform 0.5s;
}

.no-move {
  transition: transform 0s;
}
</style>
